hi guys...ole rich here..yes as some of you might know...ive been painting since the early 60's..Ive seen the good, the bad and the just plain ugly...but now I spend my time getting cars ready for pebble beach and Duntov awards thru a premier shop in colorado..we use PPG products and have done so for many years....the only other product I would consider would be Sikkens for a premier restoration...we are restoring the purist type vehicles...we have a 59 vette here restored to original specs...(bolt by bolt), a gorgeous 34 Packard eight convertible capable of best of show at pebble beach and so on...we are coached to use an etch primer when using a three part catalyzed primer with a urethane sealer and either single stage urethane color or base/clear for top coating....we are also coached to use DP40 epoxy primer if a lacquer top coat is used...we will see very little lacquer products in the near future because it is becoming extnict and is being outlawed in many states...many painters and paint reps will argue about this subject but I am a firm believer in an etch primer first on bare metal only when using the primer surfacer to block sand...this is my story and im stickin to it (LOL)